Skip to main content
SpringerLink
Log in

Fundamental study of LaMg x Cr1−x O3−δ perovskites nano-photocatalysts: Sol-gel synthesis, characterization and humidity sensing

  • Catalysis, Reaction Engineering
  • Published:
Korean Journal of Chemical Engineering Aims and scope Submit manuscript

Abstract

Nanocrystalline perovskite oxides, LaMg x Cr1−x O3−δ (x=0.0, 0.2, 0.4, 0.6, 0.8 and 1) were prepared by sol-gel method. The samples were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy and nitrogen adsorption/desorption isotherms at 77 K, respectively, to identify the structural phases, surface morphology, vibrational stretching frequencies and BET surface area of the samples. Also, it was investigated the humidity sensing characteristics of the samples. The composites were sintered at 800 °C for 5 h and subjected to dc electrical conductivity studies at room temperature. The resistance measurements as a function of relative humidity (RH) in the range of 5-98% were done and the humidity sensing factors (Sf =R5%/R98%) calculated. The activation energy of the compounds were determined from the temperature-dependent electrical conductance experiments in the temperature range of 120-300 °C. LaMgCr-3 (x=0.4) had the highest humidity sensing factor 21407±431, while LaCr-1 (x=0) the lowest sensitivity factor 27.27±2. The response and recovery characteristics were studied for LaMgCr-3, which exhibited good linearity and a very narrow hysteresis loop. The photocatalytic activity of LaMg x Cr1−x O3−δ was investigated by using the photo-decomposition of 4-chlorophenol (4-CP) under UV-visible light. The sample LaMgCr-3 (x=0.4) showed the highest photocatalytic degradation efficiency (93.05%) than other samples, due to their smaller size of particles with higher surface area.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Z. Chen and C. Lu, Sens. Lett., 3, 274 (2005).

    Article  CAS  Google Scholar 

  2. J. J. Vijaya, L. John Kennedy, A. Meenakshisundaram, G. Sekaran and K. S. Nagaraja, Sens. Actuators B, 127, 619 (2007).

    Article  CAS  Google Scholar 

  3. A.M.E. Suresh Raj, C. Mallika, K. Swaminathan, O.M. Sreedharan and K. S. Nagaraja, Sens. Actuators B, 81, 229 (2002).

    Article  Google Scholar 

  4. B. C. Chakoumakos, G. A. Lager and J. A. Fernandez-Baca, Acta Crystallogr. C, 48, 414 (1992).

    Article  Google Scholar 

  5. J. J. Vijaya, L. J. Kennedy, G. Sekaran and K. S. Nagaraja, Mater. Res. Bull., 43, 473 (2008).

    Article  CAS  Google Scholar 

  6. A. Kipyung, B.W. Wessels and S. Sampath, Sens. Actuators B, 107, 342 (2005).

    Article  Google Scholar 

  7. A. Laobuthee, S. Wongkasemjit, E. Traversa and R.M. Laine, J. Eur. Ceram. Soc., 20, 91 (2000).

    Article  CAS  Google Scholar 

  8. I. Stambolova, K. Konstantinov, S. Vassilev, P. Peshev and T. Tsacheva, Mater. Chem. Phys., 63, 104 (2000).

    Article  CAS  Google Scholar 

  9. K. Arshak and I. Gaiden, Mater. Sci. Eng. B, 118, 44 (2005).

    Article  Google Scholar 

  10. J. Jung and S. P. Lee, J. Nanosci. Nanotechnol., 13, 7030 (2013).

    Article  Google Scholar 

  11. S. Rajmohan, A. Manikandan, V. Jeseentharani, S. A. Antony and J. Pragasam, J. Nanosci. Nanotechnol., 16, 1650 (2016).

    Article  Google Scholar 

  12. A. Katoch, S.W. Choi, G. J. Sun and S. S. Kim, J. Nanosci. Nanotechnol., 13, 7097 (2013).

    Article  Google Scholar 

  13. Y. Chen, X. Lu, Y. Ding, X. Liu and G. Meng, J. Rare Earths, 28, 153 (2010).

    Article  CAS  Google Scholar 

  14. L. F.G. Setz, I. Santacruz, M.T. Colomer, S.R. H. M. Castanho and R. Moreno, Mater. Res. Bull., 46, 983 (2011).

    Article  CAS  Google Scholar 

  15. N. Kavasoglu and M. Bayhan, Turk. J. Phys., 29, 249 (2005).

    CAS  Google Scholar 

  16. A. Manikandan, M. Durka, K. Seevakan and S. Arul Antony, J. Supercond. Nov. Magn., 28, 1405 (2015).

    Article  CAS  Google Scholar 

  17. A. Manikandan, M. Durka and S. Arul Antony, J. Inorg. Organomet. Polym., 25, 804 (2015).

    Article  CAS  Google Scholar 

  18. A. Manikandan, M. Durka and S. Arul Antony, Adv. Sci. Eng. Med., 7, 33 (2015).

    Article  CAS  Google Scholar 

  19. A. Manikandan, E. Hema, M. Durka, K. Seevakan, T. Alagesan and S. Arul Antony, J. Supercond. Nov. Magn., 28, 1783 (2015).

    Article  CAS  Google Scholar 

  20. R.K. Kotnala, J. Shah, B. Singh, H. Kishan, S. Singh, S.K. Dhawan and A. Sengupta, Sens. Actuators B, 129, 909 (2008).

    Article  CAS  Google Scholar 

  21. K. S. Chou, T.K. Lee and F. J. Liu, Sens. Actuators B, 56, 106 (1999).

    Article  CAS  Google Scholar 

  22. E. S. Raj, C. Mallika, O. M. Sreedharan and K. S. Nagaraja, Mater. Res. Bull., 36, 845 (2001).

    Google Scholar 

  23. S. Pokheral and K. S. Nagaraja, Sens. Actuators B, 92, 144 (2003).

    Article  Google Scholar 

  24. D. Sornadurai, B. Josephine, V. Teresita and S. Antony, ICDD card # 00-063-0472, January 13 (2014).

    Google Scholar 

  25. D. Sornadurai, B. Josephine, V. Teresita and S. Antony, ICDD card # 00-063-0473, January 13 (2014).

    Google Scholar 

  26. D. Sornadurai, B. Josephine, V. Teresita and S. Antony, ICDD card # 00-063-0474, January 13 (2014).

    Google Scholar 

  27. D. Sornadurai, B. Josephine, V. Teresita and S. Antony, ICDD card # 00-063-0475, January 13 (2014).

    Google Scholar 

  28. D. Sornadurai, B. Josephine, V. Teresita and S. Antony, ICDD card # 00-063-0492, January 13 (2014).

    Google Scholar 

  29. S. Pokhrel and K. S. Nagaraja, Phy. Stat. Sol. A, 198, 343 (2003).

    Article  CAS  Google Scholar 

  30. A. Manikandan, R. Sridhar, S. Arul Antony and S. Ramakrishna, J. Mol. Struct., 1076, 188 (2014).

    Article  CAS  Google Scholar 

  31. A. Manikandan, M. Durka and S. Arul Antony, J. Supercond. Nov. Magn., 28, 209 (2015).

    Article  CAS  Google Scholar 

  32. A. Manikandan, M. Durka and S. Arul Antony, J. Inorg. Organomet. Polym., 25, 1019 (2015).

    Article  CAS  Google Scholar 

  33. A. Manikandan, M. Durka and S. Arul Antony, J. Supercond. Nov. Magn., 27, 2841 (2014).

    Article  CAS  Google Scholar 

  34. A. Manikandan and S. Arul Antony, J. Supercond. Nov. Magn., 27, 2725 (2014).

    Article  CAS  Google Scholar 

  35. A. Manikandan, M. Durka and S. Arul Antony, J. Supercond. Nov. Magn., 28, 2047 (2015).

    Article  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Research and Development Center, Bharathiar University, Coimbatore, 641046, India

    Benjamin Avila Josephine, Vincent Mary Teresita & Susaimanickam Arul Antony

  2. Department of Chemistry, Stella Maris College, Chennai, 600 086, India

    Benjamin Avila Josephine & Vincent Mary Teresita

  3. Department of Chemistry, Bharath Institute of Higher Education and Research, Bharath University, Chennai, 600 073, India

    Ayyar Manikandan

  4. PG and Research Department of Chemistry, Presidency College (Autonomous), Chennai, 600 005, India

    Susaimanickam Arul Antony

Authors
  1. Benjamin Avila Josephine
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ayyar Manikandan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Vincent Mary Teresita
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Susaimanickam Arul Antony
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to Ayyar Manikandan or Susaimanickam Arul Antony.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Josephine, B.A., Manikandan, A., Teresita, V.M. et al. Fundamental study of LaMg x Cr1−x O3−δ perovskites nano-photocatalysts: Sol-gel synthesis, characterization and humidity sensing. Korean J. Chem. Eng. 33, 1590–1598 (2016). https://doi.org/10.1007/s11814-015-0282-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11814-015-0282-9

Keywords

Search

Navigation